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SILICA FUME
At Westbrook Resources, we supply SF90 Grade Silica Fume, SF92 Grade Silica Fume, SF95 Grade Silica Fume and SF95 White Grade Silica Fume.
Silica Fume in its basic form is a grey, blackish powder, and is available in varying grades. Continue reading for more information about our Silica Fume that we supply across the world, its production and use in industry.
Information | SF 90 Grade | SF 92 Grade |
|---|---|---|
SiO₂ | 90% min | 92% min |
Al₂O₃ | 1% max | 1% max |
Fe₂O₃ | 2% max | 2% max |
CaO | 3% max | 3% max |
MgO | 3% max | 3% max |
C | 3% max | 3% max |
Na₂O | 3% max | 3% max |
K₂O | 3% max | 3% max |
Moisture content @ 105°C | 1.5% max | Not specified |
Loss on ignition @ 950°C | 6% max | 6% max |
Grit Size: | >45 Micron 5% | <45 Micron 90% |
Bulk Density: (densified) | 600-750kg/㎥ | 500-700kg/㎥ |
Bulk Density: (undensified) | 280-350kg/㎥ | 250-400kg/㎥ |
Information | SF 95 Grade | SF 95 White Grade |
|---|---|---|
SiO₂ | 95% min | 95% min |
Al₂O₃ | 1% max | 1% max |
Fe₂O₃ | 1% max | 0.8% max |
CaO | 1% max | 1% max (inc Mg0) |
MgO | 1% max | 1% max (inc CaO) |
C | 1.5% max | 0.2% max |
Na₂O | 1% max | 0.8% max (inc K₂O) |
K₂O | 1.2% max | 0.8% max (inc Na₂O) |
Moisture content @ 105°C | 1.5% max | Not specified |
Loss on ignition @ 950°C | 2.4% max | Not specified |
Grit Size: | >45 Micron 5% | Not specified |
Bulk Density: (densified) | 450-700kg/m³ | Not available |
Bulk Density: (undensified) | 280-350kg/m³ | 300-450kg/m³ |
Packing
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25kg bags on pallet
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1mt big bags
About Silica Fume
Silica Fume is a by-product of producing Silicon Metal and other Ferro Silicon alloys. These products are produced in an electric furnace and the smoke generated from the furnace is collected and known as Silica Fume or Microsilica. This also helps reduce the producer's carbon emissions.
Silica Fume consists primarily of amorphous (non-crystalline) Silicon Dioxide. Due to its fine particles, large surface area, and the high Silicon Dioxide content, Silica Fume is a very reactive “pozzolan” (forms cementitious properties when mixed with water and calcium hydroxide) when used in concrete.
Production of Silica Fume
During the production process of Silicon Metal or Ferro Silicon alloys, silicon monoxide gas is produced, oxidising into ultra-fine silicon dioxide particles when contacted with cool air. Using a filtration process, fine powder, also called Silica Fume, is collected. Silica Fume is an excellent pozzolanic material for increasing concrete's strength and durability.
Uses of Silica Fume
The most common use of Silica Fume is in the production of concrete, in which its compressive strength, bond strength and abrasive resistance improve the properties of the concrete. As the particle sizes are 1/100th the size of a normal cement particle, the compressive strength of the cement is increased, resulting in high-strength concrete capable of compressive strength of over 15,000psi – useful in supporting high-rise building structures. It is also used widely in the monolithic refractory industry.
Some significant benefits of using Silica Fume are as follows:
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Low permeability to chloride & water intrusion
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Increased durability & resistance
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Increased bond strength
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Increased early compressive strength
Global Sourcing and Supply of Silica Fume
At Westbrook Resources, we operate in the global sourcing and supply of Silica Fume outside the UK and EU, ensuring reliable availability for industries across the globe. Our partnerships with same source supply chains, enable us to deliver consistent and competitively priced materials, tailored to your needs.
Whether it's for use in cement, concrete, refractory products, or advanced materials, we prioritise quality assurance and logistics to meet the demands of diverse applications. Trust us at Westbrook Resources as your dependable partner in securing Silica Fume.
Sustainability and Environmental Responsibility in Silica Fume Production
Silica Fume is a co-product from the production of Ferro Silicon, Silicon Metal & Fused Minerals. It decreases waste, ensures cleaner emissions and reduces the need for raw material extraction, conserving natural resources.
Additionally, Silica Fume’s role in increasing the durability of concrete significantly extends the lifespan of infrastructure, contributing to a more sustainable built environment.
Our CSR (Corporate Social Responsibility), ESG (Environmental, Social and Governance) and Code of Ethics policies ensure that we conduct our business with the highest standards of integrity, ethics and professionalism in a socially responsible manner. By sourcing raw materials responsibly and adhering to strict environmental regulations, we aim to ensure our operations have a minimal impact on the planet.
Why Choose Westbrook As Your Silica Fume Supplier
Westbrook Resources can supply Silica Fume to countries worldwide. However, we are not REACH registered in the UK or EU so are unable to quote for supply into these locations unless the customer has a REACH registration themselves.
Our goal is to remain a long-term partner by ensuring:
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Consistent Supply
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Consistent Quality
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Competitive Pricing
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High-quality Service
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Effective Delivery Service
Should you have any questions regarding pricing and delivery, get in touch with our team today. We strive to deliver the best service possible. Additionally, view our full range of products.
Contact Us
Our team is here to assist you with any questions regarding your Silica Fume supply needs.
Contact us today to discuss your shipping requirements and see the difference between working with a trusted and experienced supplier with many years of experience in the industry.
Silica Fume FAQs
What is the difference between Silica Fume and Fumed Silica?
Though similar in name, Silica Fume and Fumed Silica are different:
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Silica Fume is a by-product of silicon production and is used mainly in construction and industrial materials.
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Fumed silica is made by burning silicon tetrachloride and is used in coatings, adhesives, and cosmetics.
Is Silica Fume environmentally friendly?
Yes, Silica Fume is considered environmentally friendly as it is a recycled industrial by-product. From its use in concrete production, it also reduces the environmental impact by reducing waste due to the significant improvement in concrete’s compressive strength, durability and therefore sustainability. Additionally, Silica Fume is safe to use and non-corrosive.
How does Silica Fume improve concrete’s resistance to aggressive environments?
Our Silica Fume has exceptional reactive properties, reducing the permeability of the concrete, which then makes it highly resistant to chemical attacks. These qualities result in concrete with higher compressive strength, reduced shrinkage, and improved resistance to cracking in challenging conditions, making it ideal for durable structures in harsh environments.
Where do Westbrook Resources supply Silica Fume?
Our Silica Fume is sold globally, with the exception of the EU and the United Kingdom (unless the customer has their own REACH registration). Given REACH Regulations in place in the EU & the United Kingdom, the cost of REACH registrations has proven prohibitive in relation to the low volume dry market and relatively low value of the product.
